Phil, At first i thought i didn't need a cooler after the turbo but once we pressed on and increased boost it became apparent that although the system didn't suffer too much, the heat of the turbo charge air was getting high enough to cause the blower some issues in terms of thermal expansion...
Phil, it's always good to hear of others trying twincharging and I get contacted by many throughout the world who have been inspired by my evo project which is still going great and being developed all the time. To be fair, I am relatively new to twincharging and I learned a lot from warpspeed...
I know of one person who has successfully mated the GTR driveline to the 4G63 engine although i have not seen any photos of how it was achieved. This is the sort of challenge i thrive on but i'm aware it's too big a project for me at the moment due to the cost mainly. The GTR is uppermost in my...
Not been here for a while due to work commitments so here's a quick update:
The season finished at the end of September at Loton Park with some great overall results. The engine and twincharger system has stayed in great shape for 8 events in a row. The only issue i had was a tensioner for the...
Exhaust backpressure is one of the most relevant issues with turbos. The lower the backpressure, the easier the engine can breathe and the lower the pumping losses in the engine are. I've yet to see any compounded turbos that have very low backpressure due to the housings and the nature of the...
Not sure about talented, certainly hard working and lucky hehe. I had my share of failures and learned by them. The worst was when the SC overheated due to the early bypass not opening at cruise throttle but i quickly worked out the reason and designed a safeguard to stop it happening again...
She is sounding great just now, very crisp and free revving. I wish our hillclimbs were longer to give me a chance to really open her up. She's still road legal but it's too dangerous for public roads lol.
Warpspeed, when i put the twincharger together it was experience with my previous SC...
Some valuable info here on my 4G63 build: http://www.eng-tips.com/viewthread.cfm?qid=267889&page=1
Hemi is right, i think you're over complicating your build when a simple twincharger system with turbo feeding SC will give you the results you're looking for.
Being honest i haven't worked out any real maths of my system! I built it and made changes depending on the dyno results to get it working as it is!
Update: I have had 6 events in a row where the car and engine has not broken. Over these 6 events i have taken an FTD at Ingliston and set 4 new...
Update:
The new engine was built, mapped and we started the hillclimb season in April. A few transmission failures have hampered the reliability and although not unexpected, these have been quite costly and stopped me developing the car further. So far the results have been a new class record...
All the transmission breakages so far have been down to fatigue, so i'm 'lifing' components now. I stripped first gear on launch last year and realised this gear had done over 500 launches before it broke! The only other part that has failed was the hollow output shaft from the gearbox to the...
Saw that and queried it with my mapper - the scales are different so each line is to be viewed as though it is on a separate graph.
Update, the engine is out and in component form, showing little signs of the hard work it's done for the last 4 years. The pistons and bores are just on their...
Mapping finished, dyno results here: http://www.flickr.com/photos/39729338@N07/5449266792/
Am pretty pleased with the results! We seem to have lost some torque since the last dyno session although it was a different rolling road last time that only measured wheel power.
The mapper had to...
I agree with Warpspeed on this. When my bypass worked, it worked faultlessley. The control of the bypass done with hoses taking pressure or vacuum signals is so simple and directly related to actual engine/boost and throttle conditions.
I have never even considered using electronics to control...
